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authorJoseph Myers <joseph@codesourcery.com>2012-07-01 13:08:59 +0000
committerJoseph Myers <joseph@codesourcery.com>2012-07-01 13:08:59 +0000
commite84eabb3871c9b39e59323bf3f6b98c2ca9d1cd0 (patch)
treedff3f1b79454b518d15a7b9bbedeb57ff156bbe8 /ports/sysdeps/alpha/stpcpy.S
parent75f0d3040a2c2de8842bfa7a09e11da1a73e17d0 (diff)
parente64ac02c24b43659048622714afdc92fedf561fa (diff)
Merge glibc-ports into ports/ directory.glibc-2.16-ports-merge
Diffstat (limited to 'ports/sysdeps/alpha/stpcpy.S')
-rw-r--r--ports/sysdeps/alpha/stpcpy.S55
1 files changed, 55 insertions, 0 deletions
diff --git a/ports/sysdeps/alpha/stpcpy.S b/ports/sysdeps/alpha/stpcpy.S
new file mode 100644
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+++ b/ports/sysdeps/alpha/stpcpy.S
@@ -0,0 +1,55 @@
+/* Copyright (C) 1996, 2002, 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson <rth@tamu.edu>, 1996.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+/* Copy a null-terminated string from SRC to DST. Return a pointer
+ to the null-terminator in the source. */
+
+#include <sysdep.h>
+
+ .text
+
+ENTRY(__stpcpy)
+ ldgp gp, 0(pv)
+#ifdef PROF
+ .set noat
+ lda AT, _mcount
+ jsr AT, (AT), _mcount
+ .set at
+#endif
+ .prologue 1
+
+ jsr t9, __stxcpy # do the work of the copy
+
+ and t8, 0xf0, t2 # binary search for byte offset of the
+ and t8, 0xcc, t1 # last byte written.
+ and t8, 0xaa, t0
+ andnot a0, 7, a0
+ cmovne t2, 4, t2
+ cmovne t1, 2, t1
+ cmovne t0, 1, t0
+ addq a0, t2, v0
+ addq t0, t1, t0
+ addq v0, t0, v0
+
+ ret
+
+ END(__stpcpy)
+
+weak_alias (__stpcpy, stpcpy)
+libc_hidden_def (__stpcpy)
+libc_hidden_builtin_def (stpcpy)